Distributer for blast-furnaces.



PATENTED' AUG. 11, 1903.

J. COOK. I

DISTRIBUTER FOR BLAST FURNACES.

APPLICATION FILED JULY 21, 1902.

N0 MODEL.

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PATENT OFFICE.

JOHN COOK, OF PlTTsBURG PENNsYLvANlA.

DISTRIBUTER FOR BLAST-FURNACES.

SPEGIFIGATION forming part of Letters Patent No. 736,074, dated August 11, 1903.

Application filed July 21,1902. Serial No. 116,379. (No model.)

'To all whom it may concern.-

Be it known that I, JOHN COOK, a citizen of the United States of America, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Distributers for Blast-Furnaces, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to certain new and useful improvements in distributers for blastfurnaces, and relates more particularly to a feed apparatus arranged within a hopper, whereby the coke, lime, and ore are centrally fed by gravity into the blast-furnace.

The invention has for its object to provide novel means whereby an automatic charging of the furnace produces an unvarying and an even distribution of lime, ore, and coke,

which is essential for successfully smelting the ore; furthermore, to provide novel automatic means whereby the noxious gases are controlled and entirely shutoff at the top of the furnace during the charging operation A still further object of my invention is to provide a gravity feed that will be automatic in all its movements, thereby discharging the lime, coke, and ore centrally into the furnace, which effectually overcomes the irregularities due to the carelessness of top fillers.

WVith the above and other objects in view the invention consists in the novel construction, combination, and arrangement of parts to be hereinafter more fully described, and specifically pointed out in the claims.

In describing the invention in detail reference is had to the accompanying drawings, forming a part of this specification, and wherein like numerals'of reference indicate like parts throughout both views, in which- Figure 1 is a side elevation partly in vertical section. Fig. 2 is a transverse vertical sectional view.

In the drawings the top of the blast-furnace is indicated by reference-numeral 1,

having a central opening formed-therein communicating with the interior of the furnace. In the central opening is secured a hopper 2, which has formed integral therewith the annular flange 3, the under face thereof resting upon the top of the furnace. The hopper 2 has formed therein inwardly-inclined. beveled walls 4, forming contracted openings therebetween. An interior casing 5 is formed integral with the hopper or rigidly secured thereto, said interior casing extending downwardly a suitable distance into the body portion of the hopper. A movable telescopic casing 6 encircles the lower portion of the casing 5. The lower walls of the telescopic casing are slightly beveled outwardly, as shown at 7. To these walls are secured brackets S, carrying bearings 9 and 10, through which extend shafts 11, upon which are secured rods 12, the upper ends of these rods being pivotally connected at 14 to the forked end 15 of the lever 16, which is fulcrumed at 17 in the bearing 18, carried by the hopper. The other end of the lever 16 is pivotally connected at 19 to the pitman-rod 20, the lower end of this rod being connected at 21 to the slide 22, operating in guides 23 of the steam or hydraulic cylinder 24, in which extends the plunger-rod 25, connected to the slide 22' Between the bearings 10 upon the shaft 11 are secured rods 26, extending upwardly through the casing of the hopper, the upper ends of said rods being pivotally secured'at 27 to levers 28, the upper ends of these levers being pivotally secured at 29 to pivoted fingers 30, which are fulcrumed upon shafts 31, upon which the doors 32 are likewise hinged. The fingers 3O carry curved ends 33.

A bell-shaped hood 34 rests against the beveled walls 4 and serves to normally close the contracted opening. This hood carries on its apex lugs 35, and between these lugs is pivotally secured at 36 the pitman-rod 37, which extends centrally up through the hopper a distance above the same, whereit is connected at 38 to links 39, which are pivotally connected at 40 to the walking-beam 41, which is fulcrumed at 42 in the bearing 43, carried by the standard 44, secured upon the tion.

top of the furnace. The pitman-rod a5 is attached to the other end of the walking-beam 41,which is actuated by means of the plungerrod 46, connected thereto and operating in the steam or hydraulic cylinder 47, which is suit ably supported upon the bracket 48, secured to the top of the blast-furnace. The lower sides of the doors 32 have formed therein a central notch 49 to permit the same to close against the pitman-rod 37 when in an elevated position.

The operation of my improved feeding apparatus is as follows: The coke, lime, and ore being placed in the hopper in any suitable manner will lodge itself against the beveled wall 7 of the casing 6. This casing is then elevated by means of the lever 16, operated by the steam-cylinder, which will tend to discharge the contents in the lower or body portion of the hopper upon the beveled walls 4, and when the lever 16 is operated to its full stroke or to the maximum degree of its travel the curved ends 33 of the fingers 30 will engage the under face of the doors 32 and will raise the same to an elevated or closed posi- The apparatus will then be in position to discharge the contents into the furnace, the latter being accomplished by the operation of the pitman-rod 37, lowering the bellshaped hood 34: into the furnace and permitting the contents of the hopper to be automatically discharged by gravity into the central opening formed in the lower portion of the hopper, which communicates with the furnace, the bell-shaped hood also acting as a spreader to equally distribute the coke, lime, and ore into the furnace. As the furnace is being charged, the hood, assuming a position below the one shown in Fig. 1 of the drawings, will permit the fumes and gases to escape into the hopper, but will be prevented from escaping from the hopper by means of the doors 32 retaining their closed position. The pitman-rod 37 is then again operated, thereby closing the central opening by means of the bell-shaped hood assuming the normal position, and the casing 6 is then again lowered, thereby opening the doors and forming a contact with the upper face of the bell shaped hood, which places the device again in an operative position.

Instead of discharging into the furnace one charge at a time, as heretofore described, it is often necessary to charge the hopper a number of times before it is desired to lower the contents of the hopper into the furnace, and when this is required the hood 3 1 remains in a closed position, and the casing may be moved upwardly a number of times as each charge is placed within the hopper, and the same will be equally distributed in the lower portion of the hopper, and after each charge the casing 6 will assume a higher position upon the telescopic section; but by this operation the doors will not be closed, as it is re quired that the lever 16 shall have its full movement until the doors 32 are closed. \Vhen a sufficient amount of substance is placed within the hopper and being charged a number of times, the operation of charging the furnace may then be accomplished in the manner as heretofore set forth.

The many advantages obtained by the use of my improved feeding apparatus will be readily apparent from the foregoing description, taken in connection with the accompanying drawings.

It will be noted that various changes may be made in the details of construction without departing from the general spirit of my invention.

Having fully described my invention, what I claim as new, and desire to secure byLetters Patent, is-- 1. In a distributer, the combination with a blast-furnace, a hopper secured therein, a central rigid casing formed integral with said hopper and extending below the same, a movable bottom, a telescopic casing operating upon said rigid casing and partially encircling the same, means to independently operate said bottom, and means whereby said telescopic casing is independently operated, for the purpose specified.

2. I11 a distributer, the combination of a hopper, a rigid interior casing formed integral with said hopper and extending below the same, a movable bottom, a telescopic casing partially encircling the said rigid casing, and means whereby said telescopic casing and said movable bottom are independently operated, substantially as described.

3. In a distributer, the combination of a hopper, doors secured in said hopper, amovable bottom, a movable casing operating upon saidmovable bottom, means connected to said movable casing and said doors whereby the same may be simultaneously operated, and means whereby said movable bottom may be independently operated, substantially as described.

c. In a distributer, the combination of a casing forming a hopper, a central casing rigidly attached therein, a movable bottom, a telescopic casing surrounding said rigid casing, doors secured in said hopper, means attached to said doors, and telescopic casing to operate the same when the telescopic casing has been elevated a predetermined distance, substantially as described.

5. In a distributer, the combination of. a hopper, doors secured in said hopper, a telescopic casing, a movable bottom, means connected to said telescopic casing and said doors to operate the latter when the telescopic cas ing has been elevated a predetermined distance, and independent means for lowering and raising the said bottom, substantially as described.

6. 111 a distributer, the combination of a easing, doors secured in said casing, a mov- In testimony whereof I affix my signatureable bottom, a movable easing secured in said in the presence of two Witnesses. first-named casing and operating upon said bottom, means for simultaneously operating the casing and doors, and independently-operating' means for the bottom, substantially as described.

JOHN COOK Witnesses:

JOHN NOLAND, E. E. POTTER. 

